Strut and antishearing member for girders



Oct. 20, 1936. H. soRENsYEN 2,058,364

STRUT AND ANTISHEARING MEMBER FOR GIRDERS Filed Jan. 16, 1936 n I i gvby W F'gf 17 Af 5 31o@ 361810 1 18110 INVENTOR Patented oct. 2o, 1936 Yf 2,058,364.

UNITED STATES PATENT oEFlcE-jl STRUT AND ANTISHEARING IVIEMBAER FORGIRDERS Henry Sorensen, Los Angeles, Calif.

Application January 16, 1936, Serial No. 59,419

5 Claims. (Cl. 'Z2-'11) y I desire to obtain Letters Patent on a device3, and wedges'l'are thereupon driven into looped which will greatlybenefit the modification of ends 8, which extend from between 3 Aand4.to a structure shown `in my U. S. Patent #1,716,710, suitable distancebeyond the edges of 3 and A4so June 11, 1929 and my U. S. Patent#1,785,214, that wedges I are driven against the edgesvof 5 Dec. 16,1930, or any other structure for which flanges 3 and bars 4, therebylocking loopedV ends my invention, herein, may be adapted. 8 to flanges3 while holding reinforcements Iv in My invention, herein, consists of asimple maninitial tension. In this manner wedgesl I0 lock ner to arrangestrut and anti-shearing members and connect reinforcements 1 in initialvtension for girders. with girders I and 2.

10 I have described my invention, and shown the It will be, further,understood that .no initial l0v same, in the following specification andits actension can be maintained in reinforcements v1 companying drawing,of whichzunless I provide the structure with an adequate Fig. 1illustrates the side view of the fragment strut resistance to preventthe lateral deflection of a steel frame structure containing my invenofgirders I, when wedges I0 are drivenf-girders tion. 2 having an equaldraw on both of `their sides, and 15- Fg. 2 is a plan View of part ofthe structure in my above referred to Patent #1,716,7101 havel shown inFig. 1. claimed, as my therein contained. invention in Fig. 3 is afragment of the end View of Fig. 1 its broad sense, the principle ofmeans to strut. taken at I-I. the supports against the above referredtovdraw Fig. 4 illustrates Fig. 1 embedded in concrete. brought about byreinforcements 1. In my abovev 2 Fig. 5 is the fragment of a plan viewwhich referred to Patents #1,716,710 and #1,785,214. I

illustrates a further part of my invention. have illustrated the strutmeans contacting thev Fig. 6 illustrates a modification of the strucwebsof the girders, or beams, with: the initially ture. tensionedreinforcements locked to their4 top Similar numerals designate similarparts, and flanges, but due tol the fact that these reinforceas numeralI designates the outside Wall girder of ments exercise a onesided drawon the outside a steel frame structure. 2 designates an inside girders,or beams, it is apparent that said top girder. 3 are the top flanges ofgirders I and 2. flanges, reaching above the strut means, become 4designates llat bars. 5 are spacing members. subjected vto shearingstrains, and the onesided 6 is a strut member indicated by broken lines.draw also has a, tilting effect on the top parts of 36' 1 arereinforcements. 8 are looped ends of rethe outside girders.

inforcements 1. 9 is seam welding. I0 are After having dealt. with theabove I amV new wedges. II are members that assume a strut and` comingto that' which constitutes my invention l anti-shearing action. I2 isthe bottom flange of herein.

girder I. I3 is the web of girder I. I4 is the In Figures 1, 3, and 4 Ihave illustrated my 35 outside edge of flange I2. I5 is the point ofconinvention to protect flange 3, of girders Il, against tact betweenflange 3 and web I3 on the outer the onesided shearing strains, causedby reinside of girder I. I6 is bracing material. I'I is forcements 1, byattaching members Il' to the concrete. I8 is a column. I9 are othermembers outerside of girders I. I prefer to seam weld 40 that assume astrut and anti-shearing action. the one end of members II, preferably,to edge 40 20 is a strut supporting beam or other means of I4 of thebottom flange I2, of girder I, and I strut support. attach the other endof members III, likewise To the top flanges 3 of girder I, and girder 2,preferably seam welded, to top flange 3 of girder I attach flat bars 4.Bars 4 are spaced from I, preferably at contact point I5 between flange3 flanges 3 by means of spacers 5 and I prefer to and web I3, all on theoutside of girder I`. Mem-v 45 attach members 3, 4, and 5 together bymeans bers II have a slanting position between points of welding, whilehaving members 5 suitably I4and I5. I place members II atsuitablelgi'n'"" spaced. Spacers 5 and flat bars 4 thus become tervals.f. 1 one with flange 3 and form a spaced double top Due to the position,which IIglfiave givenmeinflange 3`for girders I and 2. Bars 4 andflanges bers II, the followingeis"'evidenti-When the 50 3, preferablyhave the samevwidth. draw from reinforcinentsl'l asserts itsl strengthReinforcements 'I have looped ends 8,as shown on flangey '3, that drawwill awaken a tensileacm Fig. 2, that are held together by means of .Ytion -in memberslt, which is of the same strength seam welding 9. Theselooped ends 8 areY passed as the draw infreinforcements 'I1y andl thistensile through the spaces between bars 4 and flanges action, in membersII, then assumes a strut and 55 anti-shearing action against the drawwhich is exercised upon top flange 3 of girder I by reinforcements 1.

Whenever I deem it advisable I add bracing material I6, between web I3and the outside part of ange I2, in order to supply flange I2 withwhatever resistance may be required to hold the tensile action inmembers II.

'Ihe broken lines 6, on Fig. 1, indicate the removable strut asillustrated in my above referred to Patent #1,785,214, and the firmmanner in which device I6 braces flange I2 against the indicated strutmember 6 will readily be understood, besides which girder I becomes-materially stiifened thereby. I prefer to seam weld member I6 in itsposition. Strut I is removeable after concrete I1 has become hard andconcrete II then assumes the strut action -of 6. These references tobracing material I6, which I have just now made, also hold good Withregard to the non-removeable strut, which is disclosed in my other abovereferred to Patent #1,716,710.

As reinforcements 'I exercise an equal draw on both sides of girders 2itis not necessary to supply girders 2 with members II.

I have illustrated the most important part of my invention in Fig. 5 inWhich I have shown other strut 4members I9, which I attach in alslanting position from the inside edges of ange 3 of girders I togirders 2, placing these members I9 one on each side of column I8.Members I9 thereby protect the connections, between girders I and columnI8, against shearing strains caused by reinforcements 1, these membersI9 assuming the required strut and anti-shearing action to protect thesaid connections (not shown) which hold girders I to column I8. Thesestrut members I9 also counteract any inwardly tilting action, which maymanifest itself in girders I and to which I have made reference in anearlier part of this specification. Whenever I so deem it advisable Iplace a series of slanting members I9, paralleling each other, betweengirders I and 2. Y

Girders 2, together with reinforcements 1, reach fromeither side of thebuilding to its opposite side. The draw, caused by reinforcements 7, hastherefore a tendency to clamp girders 2 together, and there can be nolateral movements on girders 2, due to the equal pressure, on both sidesof girders 2, by strut members I9.

Girders 2 are always placed in an angular relation to girders I, andwhen I position my strut members I9 slantingly between girders I and 2 Iautomatically transplant the strut action of my members I9 to girders 2.Girders 2 reach between the opposed girders I. The opposed girders I,that are located inthe opposite outside walls of the building, are allfurnished with the slanting strut members I9, above described, wherebymembers I9, through the intermediate inside girders 2, can serve thepurpose to clamp the full length of the opposed outside wall girders Iagainst each other. Girders 2l are an essential and indispensable partof the steel frame structure, and had I not made my novel and simpleinvention of placing my members I9 in their slanting position, as abovedescribed, I would have had to use added material, between all of theintervening girders 2, to transplant the strut action from outside wallgirder I to its opposed outside wall girder I.

I may also attach reinforcements 1 to4 the bottom anges of girders I and2 and, in such case, I attach reinforcements 'I and strut members I9 tothe bottom flanges of girders I and 2 in the same manner, as abovedescribed, in which I attach members 'I and I9 to the top flanges 3 ofgirders I and 2.

Fig. 6 is a plan view of a modification of my invention in which strutsupporting means 29, herein shown as a beam, is attached to the insideweb I3 of girder I. The one end of members I9 is attached to the insideedge of top flange 3 of girder I, in a slanting position, as explainedunder the description of Fig. 5 above, While the other end of strutmembers I9 is attached to the strut supporting beams 29. Members I 9 areplaced on both sides of strut supporting means 20, and then serve thepurpose of counteracting the strut and shearing strains on ange 3, ofgirder I, caused by reinforcements 1.

The arrows indicate the direction of the draw brought about byreinforcements 7. y

Various other modifications may be made without departing from thespirit of my invention.

I claim:-

1. In a series of girders in rectangular formation which form a floorspan with reinforcements extending from one girder to the oppositeincluding means to initially tension rand lock said reinforcements tothe flanges of said girders and members adapted to strut said girders,the combination of said strut members intermediate the adjacent interiorsides of said girder rectangular formation.

2. In a series of girders in rectangular formation which form a floorspan with reinforcements extending from one girder to the oppositeincluding means to initially tension and lock said reinforcements to theflanges of said girders and members adapted to strut said girders, thecombination of said strut members intermediate the adjacent interioranges of said girder recta-ngular formation.

3. In the outside girder of a rectangular girder formation which forms afloor span with reinforcements extending from one girder to the yopposite including means to initially tension and lock saidreinforcements to the anges of the said girders and members adapted tostrut said girders, the combination of said strut members intermediatethe inside o-f said outside girder and those interior sides of saidformation which contact said outside girder.

4. In the outside girder of a rectangular girder formation which forms afloor span with reinforcements extending from one girder to the oppositeincluding means to initially tension and lock said reinforcements to theflanges of the said girders and members adapted to strut said girders,the combination of said strut members intermediate the inside of theflange of said outside girder and those interior sides of said formationwhich Contact said outside girder.

5. In a series of girders in rectangular formation which form a floorspan with reinforcements extending from one girder to the opposite, saidreinforcements in initial tension locked to the top flanges of saidgirders and strut members intermediate the opposed interior sides ofsaid formation, in combination with tension absorbing materialpositioned on the outer parts of said girder formation between the lowerange edges and the points of contact between the webs and top flanges.

HENRY SORENSEN.

